body {
  font-family: sans-serif;
  background: #111827;
  color: #f9fafb;
  margin: 0;
  height: 100vh;
  display: grid;
  place-items: center;
}

.chat {
  width: 100%;
  max-width: 500px;
  height: 90vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  border: 2px solid #374151;
  border-radius: 10px;
}

.chat__header {
  padding: 10px;
  background: #1f2937;
  font-weight: bold;
}

.messages {
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.msg {
  padding: 8px 12px;
  border-radius: 12px;
  max-width: 80%;
}

.msg--user {
  align-self: flex-end;
  background: #065f46;
}

.msg--bot {
  align-self: flex-start;
  background: #374151;
}

.chat__input {
  display: flex;
  gap: 6px;
  padding: 10px;
  background: #1f2937;
}

.chat__input input {
  flex: 1;
  padding: 8px;
  border-radius: 6px;
  border: none;
}

.chat__input button {
  background: #22c55e;
  color: #052e16;
  border: none;
  padding: 0 14px;
  border-radius: 6px;
  font-weight: bold;
}